US

Protected by a mosquito net, Nadia Gonzalez recovers from a bout of dengue fever at a hospital in Luque, Paraguay Friday, Feb. 5, 2016. Dengue, like the Zika virus, is transmitted by the same vector, the Aedes aegypti mosquito. Zika was discovered in a Ugandan forest in 1947 and until last year, the virus had never caused serious disease. It has now spread to more than 20 countries. (AP Photo/Jorge Saenz)

Jorge Saenz/AP

Protected by a mosquito net, Nadia Gonzalez recovers from a bout of dengue fever at a hospital in Luque, Paraguay. Dengue, like the Zika virus, is transmitted by the same vector, the Aedes aegypti mosquito

Democratic Presidential Candidates Hillary Clinton And Bernie Sanders Debate In Durham, New Hampshire...DURHAM, NH - FEBRUARY 04:  Democratic presidential candidates former Secretary of State Hillary Clinton walks on stage during a break as she debates with U.S. Sen. Bernie Sanders (I-VT) during their MSNBC Democratic Candidates Debate at the University of New Hampshire on February 4, 2016 in Durham, New Hampshire. This is the final debate for the Democratic candidates before the New Hampshire primaries.  (Photo by Justin Sullivan/Getty Images)

Justin Sullivan/Getty

Democratic presidential candidate Hillary Clinton walks on stage during a break as she debates with U.S. Sen. Bernie Sanders (I-VT) during their MSNBC Democratic Candidates Debate at the University of New Hampshire in Durham, New Hampshire. This is the final debate for the Democratic candidates before the New Hampshire primaries

Martin Shkreli, former CEO of Turing Pharmaceuticals LLC, arrives before a House Oversight and Government Reform hearing on "Developments in the Prescription Drug Market Oversight" on Capitol Hill in Washington...Martin Shkreli, (C) former CEO of Turing Pharmaceuticals LLC, arrives before a House Oversight and Government Reform hearing on "Developments in the Prescription Drug Market Oversight" on Capitol Hill in Washington February 4, 2016. REUTERS/Joshua Roberts      TPX IMAGES OF THE DAY

Joshua Roberts/Reuters

Martin Shkreli, former CEO of Turing Pharmaceuticals LLC, arrives before a House Oversight and Government Reform hearing on “Developments in the Prescription Drug Market Oversight” at Capitol Hill in Washington

A child sits on the ground and listens to U.S. Democratic presidential candidate Hillary Clinton speak to supporters during a campaign rally in Manchester, New Hampshire...A child sits on the ground and listens to U.S. Democratic presidential candidate Hillary Clinton speak to supporters during a campaign rally in Manchester, New Hampshire, February 3, 2016. REUTERS/Carlo Allegri

Carlo Allegri/Reuters

A child sits on the ground and listens to U.S. Democratic presidential candidate Hillary Clinton speak to supporters during a campaign rally in Manchester, New Hampshire

Miss Piggy, John Tuttle...Miss Piggy, with New York Stock Exchange Chief of Staff John Tuttle, rings the NYSE opening bell to highlight the season premier of Disney's "The Muppets" television show, Monday, Feb. 1, 2016. (AP Photo/Richard Drew)

Richard Drew/AP

Miss Piggy, with New York Stock Exchange Chief of Staff John Tuttle, rings the NYSE opening bell to highlight the season premier of Disney’s “The Muppets” television show

Presidential Candidate Hillary Clinton Holds Iowa Get Out The Caucus Rallies...A supporter waves signs supporting Hillary Clinton, former Secretary of State and 2016 Democratic presidential candidate, outside a campaign event at Abraham Lincoln High School in Des Moines, Iowa, U.S., on Sunday, Jan. 31, 2016. Hillary Clinton is holding onto a slim lead over Bernie Sanders in Iowa as Democrats prepare for Monday's caucuses, though an outpouring of young voters and those who say the system is rigged could enable Sanders to pull off an upset, according to a new poll. Photographer: Daniel Acker/Bloomberg

Daniel Acker/Bloomberg

A supporter waves signs supporting Hillary Clinton, former Secretary of State and 2016 Democratic presidential candidate, outside a campaign event at Abraham Lincoln High School in Des Moines, Iowa, U.S 

Brynn Anderson/AP

Supporters of Democratic presidential candidate Sen. Bernie Sanders cheer during a campaign stop, in Birmingham, Alabama 

A supporter of US Republican presidentia...A supporter of US Republican presidential candidate Donald Trump attends a rally at Liberty University in Lynchburg, Virginia, January 18, 2016.  / AFP / NICHOLAS KAMMNICHOLAS KAMM/AFP/Getty Images

Nicholas Kamm/AFP

A supporter of US Republican presidential candidate Donald Trump attends a rally at Liberty University in Lynchburg, Virginia 

A U.S. Air Force F15 fighter jet takes off from Kadena Air Base in Okinawa, southwestern Japan

Koji Ueda/AP

A U.S. Air Force F15 fighter jet takes off from Kadena Air Base in Okinawa, southwestern Japan

A long exposure photograph shows the SpaceX Falcon 9 lifting off (L) from its launch pad and then returning to a landing zone (R) at the Cape Canaveral Air Force Station, on the launcher's first mission since a June failure, in Cape Canaveral, Florida, December 21, 2015. The rocket carried a payload of eleven satellites owned by Orbcomm, a New Jersey-based communications company. This long exposure photograph was made by covering the lens in between liftoff and landing. REUTERS/Mike Brown   TPX IMAGES OF THE DAY

Mike Brown/Reuters

A long exposure photograph shows the SpaceX Falcon 9 lifting off (L) from its launch pad and then returning to a landing zone (R) at the Cape Canaveral Air Force Station on the launcher’s first mission since a June failure, in Cape Canaveral, Florida today.

Martin Shkreli, the former hedge fund manager under fire for buying a pharmaceutical company and ratcheting up the price of a life-saving drug, is escorted by law enforcement agents in New York Thursday, Dec. 17, 2015, after being taken into custody following a securities probe. A seven-count indictment unsealed in Brooklyn federal court Thursday charged Shkreli with conspiracy to commit securities fraud, conspiracy to commit wire fraud and securities fraud.

Craig Ruttle/AP

Martin Shkreli, the former hedge fund manager under fire for buying a pharmaceutical company and ratcheting up the price of a life-saving drug, is escorted by law enforcement agents in New York Thursday, after being taken into custody following a securities probe

Crowds Flock To Dyker Heights, Brooklyn For Annual Christmas Lights Display

  © ncer Platt/Getty Images

Christmas lights and other ornaments decorate a home on December in the Dyker Heights neighborhood of the Brooklyn borough of New York

People interact with the "invigorated" room at the Museum of Feeling

Stephanie Keith/Reuters

People interact with the “invigorated” room at the Museum of Feelings, a pop-up installation in New York 

Droid BB-8 arrives at the world premiere of the film "Star Wars: The Force Awakens" in Hollywood, California, December 14, 2015.  REUTERS/Mario Anzuoni

Mario Anzuoni/Reuters

Droid BB-8 arrives at the world premiere of the film “Star Wars: The Force Awakens” in Hollywood, California last night. 

K.C. Jones competes in the steer wrestling event during the eighth go-round of the National Finals Rodeo

John Locher/AP

K.C. Jones competes in the steer wrestling event during the eighth go-round of the National Finals Rodeo

A flight deck crew prepares to launch a F18 Super Hornet from the deck of the USS Eisenhower off the coast of Virginia

Mark Wilson/Getty Images

A flight deck crew prepares to launch a F18 Super Hornet from the deck of the USS Eisenhower off the coast of Virginia

Evan Jayne, of France, competes in the bareback riding event during the seventh go-round of the National Finals Rodeo in Las Vegas

John Locher/AP

Evan Jayne, of France, competes in the bareback riding event during the seventh go-round of the National Finals Rodeo in Las Vegas

Soldiers from South Korea (L) and the US (R) gesture as they set up a floating bridge during a US-South Korea joint river crossing exercise

  © hap/AFP

Soldiers from South Korea (L) and the US (R) gesture as they set up a floating bridge during a US-South Korea joint river crossing exercise in the border county of Yeoncheon, northeast of Seoul

Cathleen Garcia holds a candle during a vigil to honour shooting victims in San Bernardino, California

Jae C Hong/AP

Cathleen Garcia holds a candle during a vigil to honour shooting victims in San Bernardino, California

The "Hello Kitty" balloon proceeds high above spectators along 6th Ave during the 89th Macy's Thanksgiving Day Parade in the Manhattan borough of New York...The "Hello Kitty" balloon proceeds high above spectators along 6th Ave during the 89th Macy's Thanksgiving Day Parade in the Manhattan borough of New York November 26, 2015.

Carlo Allegri/Reuters

The “Hello Kitty” balloon proceeds high above spectators along 6th Ave during the 89th Macy’s Thanksgiving Day Parade in the Manhattan borough of New York on Thursday